i40e: Add ndo_get_phys_port_id() callback support
This patch adds a new API to get the port mac address from firmware.
It also adds support to the ndo_get_phys_port_id() callback to provide
port specific unique id to the netdev layer.
If the adapter has a valid per-port mac address then that
would be used for this purpose and is expected to be unique
on a per-port basis.
The information can be viewed by reading the phys_port_id
attribute in sysfs for each netdev or via IF netlink
interface.
Change-ID: I341fa6fff9c112f1f6d987189309e730e0b50e8b
Signed-off-by: Neerav Parikh <neerav.parikh@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 2899f78..1f72eec 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -7018,6 +7018,22 @@
}
#endif
+static int i40e_get_phys_port_id(struct net_device *netdev,
+ struct netdev_phys_port_id *ppid)
+{
+ struct i40e_netdev_priv *np = netdev_priv(netdev);
+ struct i40e_pf *pf = np->vsi->back;
+ struct i40e_hw *hw = &pf->hw;
+
+ if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
+ return -EOPNOTSUPP;
+
+ ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
+ memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
+
+ return 0;
+}
+
#ifdef HAVE_FDB_OPS
#ifdef USE_CONST_DEV_UC_CHAR
static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
@@ -7137,6 +7153,7 @@
.ndo_add_vxlan_port = i40e_add_vxlan_port,
.ndo_del_vxlan_port = i40e_del_vxlan_port,
#endif
+ .ndo_get_phys_port_id = i40e_get_phys_port_id,
#ifdef HAVE_FDB_OPS
.ndo_fdb_add = i40e_ndo_fdb_add,
#ifndef USE_DEFAULT_FDB_DEL_DUMP
@@ -8686,6 +8703,9 @@
}
dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
+ i40e_get_port_mac_addr(hw, hw->mac.port_addr);
+ if (is_valid_ether_addr(hw->mac.port_addr))
+ pf->flags |= I40E_FLAG_PORT_ID_VALID;
pci_set_drvdata(pdev, pf);
pci_save_state(pdev);